. >> sreenivasan: president obama is losing another member from his first-term cabinet. interior secretary ken salazar announced today he will step down in march, after four years on the job. salazar pushed for greater conservation and renewable energy. and, he oversaw a moratorium on offshore drilling after the b.p. oil spill in 2010. industry groups said the shutdown cost thousands of jobs, but salazar defended it today in his departure statement. attackers in algeria stormed a b.p. natural gas complex today and took dozens of foreigners hostage, including seven americans. at least two people were killed. one was british. the nationality of the other was unclear. we have a report from chris ship of "independent television news." >> reporter: the gas facility in southern algeria which early this morning was attacked by a group, claiming to be islamist militants, and where tonight that group is holding several hostages-- a number thought to be british. another briton who worked here is reported to have been killed. a jihadist group with links to al qaida in northern afri